Exam Practice Questions: L13-15 1. Fill in each blank with the best word or phra

Question

Exam Practice Questions: L13-15 1. Fill in each blank with the best word or phrase selected from the list below. Not all words or phrases will be used; each word or phrase can be used only once. lysogen capsid host range clear drift nuclease shift MOI DNA polymerase RNA polymerase plaque cloudy reverse transcriptase temperate hydroxymethylase lysogeny Viruses require the metabolites and energy of host cells to replicate themselves. Viruses contain a nucleic acid genome surrounded by a protein and a molecule within the host cell envelope determines several early genes that play a key role in its genome replication, including the protects its own genome from and lysogenic life cycles are because of the presence of replication errors by its protein shell. Specific interaction between a bacteriophage The T4 virus has that degradation. Viruses that make a choice between lytic viruses and produce plaques that are s. The influenza virus evolves new strains rapidly due to in a process referred to as antigenic 2. After each sentence below, note whether the sentence is true or false. If false, cross out one incorrect word in the sentence and write the correct one above it. a. In a lytic virus life cycle, the eclipse period is when the viral genome is replicated. b. During rolling circle replication of dsDNA viruses, leading strand DNA polymerase initiates replication from an RNA primer. c. - strand ssRNA viruses use host RNA polymerase for replication of their genome. d. A mutant lambda virus that cannot enter the lysogenic pathway will produce cloudy plaques on a lawn of host cells e. + strand ssRNA viruses use host ribosomes for immediate translation of their genome prior to replication.

Explanation / Answer

Ans 1.

1. Capsid

2. Host range

3. Hydroxymethylases

4. Nucleases

5.temperate

6.cloudy

7. Lysogen

8.RNA polymerase

9. Drift

Ans 2.

A. True

B. Falae. True word is lagging strand.

C.False. true word is their own RNA depended RNA polymerase.

D. False, clear plaque

E. True

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